Shutter for moving-picture machines.



F. w HOCHSTETTER. SHUTTER FOR MOVING PICTURE MACHINES. I APPLICATION FILED mum-.1913.

1,137.320. I Patented @1127, 1915.

2 SHEETS-SHEET I.

F. W. HOCHSTETTER.

SHUTTER FOR MOVING PICTURE MACHINES. RPPLICATION map MAY 21, 1913.

1,137,320. Patented'Apn- 27, 1915.

2 SHEETS-SHEET 2.

UNITED sTATEs FREDERICK PATENT OFFICE.

W. HOCHSTETTER, OF NEW YORK, N. 'Y., ASSTGNOR TO H. P. PATENTS AND PROCESSES COMPANY, INC., A CORPORATION OF NEW YORK.

SHUTTER FOR MOVING-PICTURE MACHINES.

Specification of Letters Patent.

Patented Apr. 27, 1915.

Application filed May 21, 1913'. Serial No. 769,021.

T 0 all whom it may concern many, and a resident of New York, county and State of New. York, have invented a certain new and useful Improvement in Shutters for Moving-Picture Machines, of which the following is a full, clear, and exact, specification.

adapted to be used in con unction with cameras and projecting apparatus employed for producing and exhibiting moving pictures in colors.

My invention has for its object to simplify the production and exhibition of moving pictures in their natural colors by providing a form of shutteradapted to be utilized in I conjunction with the usual or any preferred form of a camera, and a projecting apparatus in a manner whereby the pictures may be taken and afterward exhibited without requiring the'mechanism of the machine or that of the shutter to be operated at other than normal speed, thus overcoming the necessity for use of apparatus which must be operated at a high speed as is incident to methods ordinarily employed in this art. This is-accomplished mainly by providing a drum having tubes disposed diametrically therethrough in a radial, or spoke-fashion to provide exposure passages whereby the entrances to the tubes at the periphery of the drum are spaced apart, 1' and the drum is caused to be rotated across the plane of the exposures of the film when the pictures are taken, and when ,the-images are projected so that thelight focused through the passages will be intermittently cut-off by the ends of the tubes during their curved downward or upward revolutions. By'employing one or more transparent colored plates in the passages when the shutter is used with a camera the natural colors of the objects being photographed will be recorded on the negative film, and the negative is then converted to a positive by the usual means. The shutter with corresponding colored plates are employed in a similar manner in conjunction with a projecting apparatus, and .the pictures of the objects will be displayed in their natural colors on a screen.

Another object of the invention is to pro-' vide means in each of the tubes of the shutter to permit one, or a number of transparent color plates to be removably held therein.

A further object of the invention is to provide a form of shutter adapted to be conveniently used in conjunction with either a camera, or a projecting apparatus; and still i r a further object of the lnvention is to pro- This invention relates to a class of shutters vide means whereby the drum will be rotated at the same speed and in unison with the operation of the camera or projecting apparatus.

With these and other objects in view, the I invention will be hereinafter more particularly described with reference to the accompanying drawings, which form a part of this specification, and will'be pointed out in the claims at the end of the description.

In the drawings, Figure l is a fragmentary section, partly in detail, of a form of mpving pleture camera or projecting appa-.

ratus with one form of shutter embodying my invention applied thereto. Fig. 2 is a section through the central part of the drum of the shutter. Fig. 3 is a view, partly broken away, of the edge face of the shutter. Fig. 4 is a side elevation, partly broken away, of the drum of the shutter, and Fig. 5 is a side elevation, partly broken away, of somewhat a dificrent form of the drum.

The shutter is mounted in acasing, as 10, having an aperture 11 through its front wall, and to said casing at this aperture is held one end of a' telescopic barrel 12 carrying one or more focusing lenses 13 and 14. of the usual, or any preferred forms. The casing 10 .is,secured to the front wall 15 having an exposure window 16 of any suitable make ofcamera, or projecting apparatus'adapted to be used for producing the negative plates, or films in photographing scenery, or other objects, or for exhibiting the finished pictures upon a. screen. The camera, or projecting apparatus is preferably provided operated by the rotation of a drive shaft 19 which maybe driven by a crank handle, as 20.

1n the casing 10 is arranged the rotatable shutter proper, and said shutter is preferably in the form of a drum 20 composed of two parallel spaced side plates 21 and 22 both of which may be circular in shape. At the peripheries of the plates 21 and 22 is an annular band 23 having an equal number of openings 24 therethrough. The openings 24 are spaced at intervals through the band so that the openings of each pair are diametrically opposite to each other, and,

the portions of the annular band between the openings provide opaque sections, as 25. Extending laterally in opposite directions from the center of the side plates 21 and 22 are studs 26 and 27 which are journaled in bearings provided exterlorly of the side walls of the casing 10. Within the drum I 20 of the shutter are provided pairs of tubes 28 nd 28 which are in alinement, and

the outer end of each of said tubes terminates at the edges of one of the openings 24 of the annular band of the drum. The pairs of the tubes 28 and 28 -are disposed diametrically through the drum so as to be arranged radially, or in spoke-fashion with relation to the axial center of the drum. A continuous passage, as 29, is thereby provided through each pair of the tubes, and while in Figs. 1, 2, 3, 4, 1 show only two of the passages, it will be understood )that forms of the drum may be constructed wherein a greater number of the passages may be used, as illustrated in Fig. 5. By providing this form of the drum 20 and journaling it in the casing 10, as described,

each of the passages 29'is adapted when the drum is rotated to beconsecutively registered with the aperture 11 of the casing 10 and the exposure window 16 of the camera whereby the rays of light focused from the lenses 13 and 14 will be intermittenly di-.

rected through the passages 29 and through the exposure window upon the film.

' The tubes'28 and 28 are preferably sub.-

stantially rectangular in shape, and m ths inner surface of one of the Walls of each of said tubes may be one, or a plurality of transverse grooves, as 30.. At corresponding parts of the inner surface of the opposite wall of each of the, tubes 28 and 28 may be a similarnumber of grooves or slots, as 31, each of which communicates with an opening 31 through the side plat 21, Fig. 3. When'the shutter is employed in conjunction with a camera for recording on a sensitized film the natural colors of the scenery, or objects being photographedfor when the shutter is used in conjunctionwith a projecting apparatus for exhibitingJhe pictures in their natural colors, through one,

or more of the openings "31" and into one menses or more of the grooves 30 and 31 is inserted a transparent plate, or slide of glass, or'

other material, as 32, each of which is preferably of one-of the primary colors; Usually only one of the colored transparent plates is used at one end of each of the passages 29 of the drum so that the opposite 1 J end thereof Wlll be open, and 1n mstances number of the colored transparent plates may be required to accurately record in the having a part thereof pivoted to the sidev plate 21 of the, drum in a manner whereby the clip may be rotatably moved so one, or both of its'ends will engage the edge of one or more of the colored plates when arrangedin the sets of the groves 30 and 31. By reversely swinging one or all of the clips 33 the colored plates may be removed from the tubes, as occasion requiresw For the purpose of rotating the drum 20 in unison with the operation of the camera,

or projecting apparatus, upon the stud 27 of the drum is a gear 34 in mesh with a gear 35 which is freely rotatable upon a short shaft 36 rigidly held in one of the side walls of the casing 10. The gear 35 is in mesh with a drive gear 38 provided on the drive shaft 19. The gears 34, 35, 38 are of relative diameters whereby the drum 20* will be preferably rotated at a speed equivalent to making sixteen revolutions to one revolution of the drive gear 38. flhe sensitized film will thereby be more positively affected by the rays of light focused thereon through the colored transparent plates when producing anegative than by driving the shutter at a speed of thirty-two to one as is indrum. The film willbe transmitted intermittently through the machine at a corresponding speed. As the drum 20 is arranged so that its annular band will be re- -.volved in the ,path of the rays of light focused from the lenses 13 and 14 the intermlttent cutting-off of the light directed through the exposure passage 29 will be graduated by the ends of the-tubes of the drum during their curved downward or upward revolutions across the rays of the light. The light directe 1 through the trans parent color plates will thereby perfectly merge the natural colors of the objects being photographed so as to be accordingly recorded on the sensitized film on a screen.

In the foregoing vdescription I have embodied the preferred form of my invention, but I do not wish to be understood as limiting myself thereto, as I am aware that modifications may be made therein without departing from the principle, or sacrificing any of the advantages of this invention, therefore I reserve to myself the right to make such changes as fairly fall within the scope thereof. i

Having thus described my invention, I claim as new and desire to secure by Letters Patent 1. In a shutter of the character described, a rotatable drum having a passage extending diametrically therethrongh from opposite parts of its peripheral face, said drum being adapted to be disposed sothat when rotated in the path of the rays of light its peripheral face will revolve whereby the light focused thereon will be alternately directed through its passage and cut-off during the revolutions of the drum, means provided in the passage of the drum for removably carrying a colored. transparent plate therein and means serving to rotate the drum.

2. In a shutter of the character described, a rotatable drum having a plurality o'fpassages extending diametrically therethrongh from opposite parts of its peripheral face and disposed in spoke-fashion with relation to the axial center thereof whereby the ends of the passages are spaced apart, said drum being adapted to be disposed so that when rotated inthe path of rays of light its peripheral face will revolve ,whereby the light focused thereon will be directed through the passages and cut-off alternately during the revolutions of the drum, means provided in each passage of the drum for. removably carrying a colored transparent plate therein, means provided on the drum at each of its passages for holding each of the transparent plates against displacement, and means serving. to rotate the drum.

3. In a shutter of the character described, a plurality ,of pairs of connected rotatable tubes, each being radially dispose from a common center so that the outer en s thereof 'arespaced apart, and the tubes of each pair being in alinementwhereby a continuous passage is provided therethrough, said tubes being adapted to be disposed so that when rotated in the path of the rays of light the outer ends thereof will revolve whereby the-light focused thereon will be directed through the passages and cut-off alternately during the revolutions of the tubes, means provided in ;.-each pair of the tubes for removably carrying a transparent common center so that the outer ends thereof are spaced apart and the tubes of each pair being in' alinement whereby a continuous passage is provided therethrongh, said tubes being adapted to be disposed so that when rotated the outer ends thereof will revolve whereby the light focused thereon will be directed through the passages of the tubes and cut-off alternately during the revolution of the tubes, a plurality of colored transparent plates, one being provided in each pair of the tubes to embrace the passage thereof, and means serving to rotate the tubes.

5. In a shutter of the character described, the combination with a moving picture machine which is operated by a drive shaft, of a rotatable drumcomposed of. two spaced parallel circular side plates, an annular band provided around the periphery of the side plates, said annular band having a plurality of spaced openings therethrough, and a plurality of pairs of connected tubes provided between the side plates, said'tubes being radially disposed with relation to the axial center of the side plates so that the outer end of each tube communicates with one of the openings of the annular band, and the tubes of each pair being in aline-. ment whereby a continuous passagels provided therethrough, said drum being adapted to be disposed so that when rotated the annular band thereof will revolve whereby the light focused thereon will be directed through the passages of the tubes and cut off alternately during the revolution of the drum, means provided in each pair of the tubes for removably carrying a number of transparent plates therein, a plurality of clips on each pair of the tubes for holding the transparent plates against accidental displacement whenin the tubes, and gearing for imparting rotation to the drum when the drive shaft of the machine is driven.

6. In a shutter of the character described, the combination with a moving picture machine which is operated by the rotation of a drive shaft, of arotatable drum composed of two spaced parallel circular side plates, an annular band provided around the periphery of the side plates, said annular band having a plurality of spaced openings there through and a plurality of pairs of *connected tubes between the side plates, said tubes beirfg radially disposed with relation to the axial center of the side plates so that the outer end of each tube communicates with one of the openings of the annular band, and the tubes of each pair being in alinement whereby a. continuous passage is provided therethrough, said drum being adapted to be disposed so that when rotated the annular band thereoi -wiii revolve whereby the light focused thereon wili he directed through the passages of the tubes and out-oi? alternately during the revolution of the drum,"a plurality of colored trans- V 10 parent plates, one removably held in one of each pair of the tubes, and gearing'for impa rting rotatation to the drum when the drive shaft of the machine is driven.

This specification signed and witnessed this twentieth day of May A, D. 1913 FREDERICK W. HOGHSTETTER.

Witnesses:

Rom". B. Aeeo'r'r, M. Dmmon'r. 

